Mix wasabi and mayonnaise untilsmooth. Carefully fold in avocadoand scallion. Dip both hands infinger bowl, shaking off excess. Gentlyshape about one tablespoon of rice into asmall oval or rectangle. Place one noristrip against rice, shiny side out. Pressgently and continue to wrap strip aroundrice ball. Use a grain of rice to sealoverlapped ends of nori.

Cover top of rice with avocadomixture. Sprinkle with sesame seeds. Tuck3-4 cucumber slices in at one end. Repeatfor remaining sushi. Serve with soy sauceand beni-shoga.